SSL-Tools

SSL check results of mail.springer.schule

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Discover if the mail servers for mail.springer.schule can be reached through a secure connection.

To establish a secure connection a mail server has to offer STARTTLS (SSL), a trustworthy SSL certificate, support for the Diffie-Hellman-Algorithm to guarantee Perfect Forward Secrecy and must not be vulnerable against the Heartbleed attack. Futhermore we recommend using end-to-end encryption with GnuPG.

Summary

JSON Refresh

Report created Thu, 18 Apr 2024 12:18:46 +0000

The mailservers of mail.springer.schule can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @mail.springer.schule addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.springer.schule
148.251.195.71
 -
supported
mail.springer.schule
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
4 s
mail.springer.schule
2a01:4f8:211:18c6::71
 -
supported
mail.springer.schule
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
4 s

Outgoing Mails

We have not received any emails from a @mail.springer.schule address so far. Test mail delivery

Certificates

First seen at:

CN=mail.springer.schule

Certificate chain
  • mail.springer.schule
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R3
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mail.springer.schule
Alternative Names
  • autoconfig.springer.schule
  • autodiscover.springer.schule
  • mail.springer.schule
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R3
validity period
Not valid before
2024-03-24
Not valid after
2024-06-22
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
98:12:4A:ED:94:0B:90:CB:35:9F:30:6E:F2:18:1B:0A:C5:00:9F:16:C3:74:D8:32:79:12:E1:15:85:40:0E:10
SHA1
1E:89:98:3E:05:21:1D:C0:40:C2:E0:5E:62:5D:93:D6:3F:94:3E:00
X509v3 extensions
subjectKeyIdentifier
  • 88:50:E0:8D:7E:24:28:7B:97:CB:C1:65:34:4F:E7:D0:13:B3:EF:A5
authorityKeyIdentifier
  • keyid:14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
authorityInfoAccess
  • OCSP - URI:http://r3.o.lencr.org
  • CA Issuers - URI:http://r3.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 3F:17:4B:4F:D7:22:47:58:94:1D:65:1C:84:BE:0D:12:
  • ED:90:37:7F:1F:85:6A:EB:C1:BF:28:85:EC:F8:64:6E
  • Timestamp : Mar 24 21:03:14.674 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:E2:48:63:D2:0D:E5:3B:88:7E:6E:8E:
  • 67:4C:D6:9B:C9:44:05:DC:CF:89:4A:35:23:79:45:51:
  • A9:D9:7B:E6:FB:02:20:61:4F:E9:FD:7B:6F:1D:D9:0C:
  • 04:B5:93:06:CF:86:4D:F1:63:38:64:52:82:B8:14:2B:
  • 57:7C:FE:1D:E6:65:4F
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : EE:CD:D0:64:D5:DB:1A:CE:C5:5C:B7:9D:B4:CD:13:A2:
  • 32:87:46:7C:BC:EC:DE:C3:51:48:59:46:71:1F:B5:9B
  • Timestamp : Mar 24 21:03:14.688 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:F5:93:0E:6F:AE:A3:D2:E6:30:3A:34:
  • E9:DA:96:F4:3A:50:36:7E:A8:6C:81:C0:69:94:95:2E:
  • 1A:E5:BC:2D:35:02:21:00:AB:2C:43:B8:A6:E1:32:1B:
  • FE:18:D8:A7:F0:50:51:C6:1E:2D:60:DB:C8:E8:A1:45:
  • AC:75:99:91:DC:A3:A9:40